Door-to-door to Two Manhattan West, 375 Ninth Avenue · 9:00 a.m. weekday arrival
Anywhere inside the outline reaches the office in 50 minutes or less — counting the walk at both ends, the wait, the ride, and one transfer at most.
Scheduled MTA and PATH times from the current GTFS feed, plus half the headway as expected wait, plus a reliability margin of 5 minutes — 6 on the B and Q, 5 on PATH. Subway and PATH only: no bus, ferry, or commuter rail. One transfer maximum.
Each qualifying station gets its own walking radius, min(15 min, 50 − that station's time), at 78 m/min with a 1.25 grid factor. The outline is the union of those radii.
The outline is smoothed. The literal union of 301 circles has a scalloped edge; closing it adds 4.86 km² at the concave notches, so the line runs fractionally generous. It is clipped to land — 15.2 km² of the raw union fell in rivers and bays.
7 fragments under 0.05 km² are not drawn (0.168 km² in total). Each was a lone station at 48–50 minutes with under two minutes of walking allowance: Fordham Rd (47.8); 170 St (47.9); 25 St (48.1); 36 St (48.3); Prospect Park (48.4); 15 St-Prospect Park (48.8); Marble Hill-225 St (48.8); Intervale Av (49.1); Kingsbridge Rd (49.1); Sutphin Blvd-Archer Av-JFK Airport (49.2); Briarwood (49.2); Flushing-Main St (49.3); Ralph Av (49.5); 174-175 Sts (49.9); Euclid Av (49.9).
The PATH schedule feed expired 2026-06-01 and is the newest published, so the New Jersey pieces rest on a stale timetable.